# N768AL: Sikorsky S-76A - Status: Valid registration - Airframe: [Sikorsky S-76A](https://openairdocs.org/model/sikorsky-s-76a) (registry code 8143006, 14 seats) - Data sheets: [TCDS H1NE](https://openairdocs.org/tcds/H1NE) (Sikorsky Aircraft Corporation) (OpenAirDocs) - Serial number: 760031 - Type: Rotorcraft - Engine type: Turbo-shaft - Mode S code: AA5F4B - Registered owner: [Sikorsky Aircraft Corp](https://openairdocs.org/faa-owner/SIKORSKY%20AIRCRAFT%20CORP) - Location: [Stratford, CT](https://openairdocs.org/faa-place/CT/Stratford) - Owner type: Corporation - Owner's area on the map: 41.1630° N, 73.1281° W: Placed by OpenAirDocs at the center of ZIP code 06615, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=768AL - Page: https://openairdocs.org/aircraft/N768AL From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. ## ADs that may apply (OpenAirDocs): 58 in force ### Matched by airframe (Sikorsky S-76A) - [AD 2024-20-07](https://openairdocs.org/ad/2024-20-07): Emergency Equipment; Emergency Flotation Section · Apical Emergency Float Kit, P/N 20498 (STC SR00780LA or 12 others). Effective Dec 5, 2024 - [AD 2023-11-07](https://openairdocs.org/ad/2023-11-07): Ground Proximity System · Airbus Helicopters 47, 206, 210 and 237 more. Effective Jun 22, 2023 - [AD 2022-05-10](https://openairdocs.org/ad/2022-05-10): Cabin Equipment/Furnishings · Airbus Helicopters AS332L, AS332L1, AS332L2 and 57 more. Effective Apr 20, 2022 - [AD 2017-19-01](https://openairdocs.org/ad/2017-19-01): Rotorcraft Flight Control · Sikorsky S-76A, S-76B, S-76C and 1 more. Effective Jan 2, 2018 - [AD 2015-26-10](https://openairdocs.org/ad/2015-26-10): Main Rotor Gearbox · Sikorsky S-76A, S-76B and S-76C. Effective Feb 9, 2016 - [AD 2015-19-51](https://openairdocs.org/ad/2015-19-51): Flight Control System · Sikorsky S-76A, S-76B, S-76C and 1 more. Effective Nov 10, 2015 - [AD 2015-04-05](https://openairdocs.org/ad/2015-04-05): Tail Rotor Drive Shaft · Sikorsky S-76A, S-76B, S-76C and 1 more. Effective Mar 12, 2015 - [AD 2014-08-06](https://openairdocs.org/ad/2014-08-06): Main Rotor Head · Sikorsky S-76A, S-76B and S-76C. Effective Jun 2, 2014 - [AD 2013-22-15](https://openairdocs.org/ad/2013-22-15): Main Rotor Head · Sikorsky S-76A, S-76B and S-76C. Effective Dec 13, 2013 - [AD 2013-06-51](https://openairdocs.org/ad/2013-06-51): Equipment/Furnishings · Agusta A109, A109A, A109A II and 43 more. Effective Jul 15, 2013 - [AD 2012-15-08](https://openairdocs.org/ad/2012-15-08): Main Rotor Brake · Sikorsky S-76A. Effective Sep 21, 2012 - [AD 2010-26-09](https://openairdocs.org/ad/2010-26-09): Navigation · Sikorsky S-76A, S-76B and S-76C. Effective Jan 12, 2011 - [AD 2010-17-16](https://openairdocs.org/ad/2010-17-16): Vertical Stabilizer · Sikorsky S-76A, S-76B and S-76C. Effective Oct 18, 2010 - [AD 2010-10-02](https://openairdocs.org/ad/2010-10-02): Servo actuator · Sikorsky S-76A, S-76B and S-76C. Effective Jun 17, 2010 - [AD 2010-07-02](https://openairdocs.org/ad/2010-07-02): Integrated navigation units (INUs) · 328 Support Services 328-100, 328-300, Jetstream Model 4101 and 26 more. Effective May 3, 2010 - [AD 2007-11-05](https://openairdocs.org/ad/2007-11-05): Main rotor shaft assembly (M/R shaft) · Sikorsky S-76A, S-76B and S-76C. Effective Jun 15, 2007 - [AD 2004-06-04](https://openairdocs.org/ad/2004-06-04): Dual channel autopilot and dual inverters · Sikorsky S-76A, S-76B and S-76C. Effective Apr 15, 2004 - [AD 2003-14-18](https://openairdocs.org/ad/2003-14-18): Main landing gear brake discs (discs) · Sikorsky S-76A, S-76B and S-76C. Effective Aug 25, 2003 - [AD 2003-04-15](https://openairdocs.org/ad/2003-04-15): Rotor Brake Disc (RBD) · Sikorsky S-76A, S-76B and S-76C. Effective Feb 27, 2003 - [AD 2002-21-07](https://openairdocs.org/ad/2002-21-07): Main rotor spindle attachment bolt · Sikorsky S-76A, S-76B and S-76C. Effective Nov 25, 2002 - [AD 2002-15-51](https://openairdocs.org/ad/2002-15-51): Main rotor blade · Sikorsky S-76A, S-76B and S-76C. Effective Oct 18, 2002 - [AD 2002-05-06](https://openairdocs.org/ad/2002-05-06): Main and Nose Landing Gear Parts · Sikorsky S-76A. Effective Apr 22, 2002 - [AD 2001-22-14](https://openairdocs.org/ad/2001-22-14): Fire Extinguishing System Bottle Cartridges · Airbus A300 B2-1A, A300 B2-1C, A300 B2-203 and 105 more. Effective Dec 10, 2001 - [AD 2001-10-06](https://openairdocs.org/ad/2001-10-06): Main Rotor Shaft Assembly · Sikorsky S-76A, S-76B and S-76C. Effective Jun 21, 2001 - [AD 94-14-20 R1](https://openairdocs.org/ad/94-14-20-R1): Tail Rotor Blade Spar Elliptical Centering Plug · Sikorsky S-76A. Effective Jun 8, 2001 - [AD 2001-01-04](https://openairdocs.org/ad/2001-01-04): Rod Assembly · Sikorsky S-76A, S-76B and S-76C. Effective Feb 2, 2001 - [AD 2000-11-52](https://openairdocs.org/ad/2000-11-52): Main Rotor Blade · Sikorsky S-76A, S-76B and S-76C. Effective Aug 31, 2000 - [AD 2000-12-09](https://openairdocs.org/ad/2000-12-09): Air Conditioning System · Sikorsky S-76A. Effective Jul 28, 2000 - [AD 99-19-30](https://openairdocs.org/ad/99-19-30): Tail Gearbox Forward Fairing · Sikorsky S-76A, S-76B and S-76C. Effective Oct 4, 1999 - [AD 99-11-04](https://openairdocs.org/ad/99-11-04): Rotorcraft Flight Manual - Landing Gross Weights and Climb · Sikorsky S-76A with STC SH568NE. Effective Jul 9, 1999 - [AD 98-17-15](https://openairdocs.org/ad/98-17-15): Swashplate Assembly Uniball Bearing Retainer Inspection · Sikorsky S-76A, S-76B and S-76C. Effective Feb 1, 1999 - [AD 95-22-01](https://openairdocs.org/ad/95-22-01): Fluorescent Lighting System · Aerospace Lighting Fluorescent lighting systems, A310-203, A310-204 and 74 more. Effective Dec 4, 1995 - [AD 91-24-13](https://openairdocs.org/ad/91-24-13): Vertical Pylon Forward Spar Cap and Web · Sikorsky S-76A. Effective Dec 20, 1991 - [AD 91-08-03](https://openairdocs.org/ad/91-08-03): Forward Spar Cap · Sikorsky S-76A. Effective May 3, 1991 - [AD 89-07-12](https://openairdocs.org/ad/89-07-12): Tail Rotor Horn · Sikorsky S-76A and S-76B. Effective Apr 27, 1989 - [AD 87-23-07 R1](https://openairdocs.org/ad/87-23-07-R1): Electrical Door Locking Actuators · Sikorsky S-76A and S-76B. Effective Jan 11, 1989 - [AD 87-25-02](https://openairdocs.org/ad/87-25-02): Ground Connections · Sikorsky S-76A and S-76B. Effective Dec 31, 1987 - [AD 87-12-06](https://openairdocs.org/ad/87-12-06): Generator Control Unit · Sikorsky S-76A and S-76B. Effective Jun 10, 1987 - [AD 86-19-14](https://openairdocs.org/ad/86-19-14): Tail Rotor Assembly · Sikorsky S-76A and S-76B. Effective Jan 30, 1987 - [AD 82-25-01 R1](https://openairdocs.org/ad/82-25-01-R1): Right and Left Main Landing Gear Positioning Rod Ends · Sikorsky S-76A. Effective Dec 1, 1986 - [AD 86-14-07](https://openairdocs.org/ad/86-14-07): Push Rod Assembly · Sikorsky S-76A and S-76B. Effective Oct 20, 1986 - [AD 85-07-03 R1](https://openairdocs.org/ad/85-07-03-R1): Instrument Landing System · Sperry digital automatic flight control system, single and two… (American Eurocopter STC SH2215NM or 2 others). Effective Sep 14, 1986 - [AD 85-15-06](https://openairdocs.org/ad/85-15-06): Tail Rotor Drive Shaft Bearings · Sikorsky S-76A. Effective Nov 25, 1985 - [AD 84-19-51 R1](https://openairdocs.org/ad/84-19-51-R1): Center Firewall Supports · Sikorsky S-76A. Effective Mar 7, 1985 - [AD 84-17-01](https://openairdocs.org/ad/84-17-01): Main Rotor Pitch Horn · Sikorsky S-76A. Effective Jan 10, 1985 - [AD 84-15-04](https://openairdocs.org/ad/84-15-04): Tail Rotor Controls · Sikorsky S-76A. Effective Aug 3, 1984 - [AD 84-10-02](https://openairdocs.org/ad/84-10-02): Main Rotor Blade Spar · Sikorsky S-76A. Effective Jun 18, 1984 - [AD 84-08-01](https://openairdocs.org/ad/84-08-01): Shaft Bearing Assembly · Sikorsky S-76A. Effective Apr 24, 1984 - [AD 82-17-03](https://openairdocs.org/ad/82-17-03): Rotor Brake Assembly · Sikorsky S-76A. Effective Aug 23, 1982 - [AD 82-06-51](https://openairdocs.org/ad/82-06-51): Main Gearbox Shaft And Spur Pinions · Sikorsky S-76A. Effective Jun 3, 1982 ### Historical (superseded or no longer in force) - [AD 2021-23-13](https://openairdocs.org/ad/2021-23-13) (historical): Ground Proximity System · Airbus Helicopters K-225, K-190A, K-240 and 237 more. Effective Dec 9, 2021 - [AD 2010-11-52](https://openairdocs.org/ad/2010-11-52) (historical): Navigation system · Sikorsky S-76A, S-76B and S-76C - [AD 2006-22-05](https://openairdocs.org/ad/2006-22-05) (historical): Integrated navigation units (INUs) · 328 Support Services 328-100, 328-300, Jetstream Model 4101 and 27 more. Effective Dec 1, 2006 - [AD 2005-22-01](https://openairdocs.org/ad/2005-22-01) (historical): Main rotor lower bifilar arm assembly · Sikorsky S-76A, S-76B and S-76C. Effective Nov 10, 2005 All 62: https://openairdocs.org/aircraft/N768AL/ads.md ## Information bulletins (advisory) (2 in force) - [SAIB AIR-20-11](https://openairdocs.org/saib/AIR-20-11): Attitude and Direction Data System, Incorrect AHRS Yaw Rate Output. Issued Jun 22, 2020 - [SAIB SW-08-37](https://openairdocs.org/saib/SW-08-37): Inoperative Cyclic Control Stick Guard. Issued Jul 22, 2008 ## NTSB investigations None matched to N768AL. ## FAA accident and incident reports (6) From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [Incident 19980130011159I](https://openairdocs.org/incident/19980130011159I), Jan 30, 1998: Skrsky S76A (N768AL), Gulf Mexico, LA, Minor damage. Narrative: on 30 jan 1998, at 0900 CT, a Sikorsky SK-76-A N768AL, operated by offshore logistics, inc., certificate no. ALGA151C, struck a safety fence with… - [Incident 19910111005839I](https://openairdocs.org/incident/19910111005839I), Jan 11, 1991: Skrsky S76A (N768AL), Patterson, LA. NR1 engine chip detector light on. Engine failed. Vectored for landing. Turbine wheel had burst. - [Incident 19901212063829I](https://openairdocs.org/incident/19901212063829I), Dec 12, 1990: Skrsky S76A (N768AL), Patterson, LA. NR1 engine power surge. Secured and landed. Governor failed due to bearing failure. - [Incident 19900531034669I](https://openairdocs.org/incident/19900531034669I), May 31, 1990: Skrsky S76A (N768AL), Gulf Of Mexico, LA. Experienced limitation to left cyclic control travel on approach. Left cyclic control stop was improperly adjusted. - [Incident 19810428029609I](https://openairdocs.org/incident/19810428029609I), Apr 28, 1981: Skrsky S76A (N768AL), Cameron, LA, Minor damage. The two and one half bearing failed debris caused oil pump to shear shaft. - [Incident 19800325040129I](https://openairdocs.org/incident/19800325040129I), Mar 25, 1980: Skrsky S76A (N768AL), Sabine, TX, Minor damage. Upper forward part of right passenger door came off in flight, the day after an emergency release test. ## Service difficulty reports (12) As reported by operators and repair stations. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. - [SDR ALG2003F00068](https://openairdocs.org/sdr/ALG2003F00068), Jul 31, 2002: WIRE. FAILED. DURING PRESTART CHECKLIST. WHEN THE (AUX ESS POWER) CHECK WAS DONE, THE PILOT FLOAT BOTTLE DISCHARGED, AFTER APPROXIMATELY 2-3 SECONDS. WHILE SWITCH WAS ENGAGED - [SDR ALG2001F00004](https://openairdocs.org/sdr/ALG2001F00004), May 25, 2001: COMPRESSOR WHEEL. CORRODED. RECEIVED TURBINE FROM FIELD TO REPAIR FOR HIGH FREQUENCY AND VIBES. REMOVED OUTER COMBUSTION CASE FROM TURBINE TO INSPECT FOR HIGH FREQUENCY AND FOUND 1ST STAGE - [SDR 98ZZZX308](https://openairdocs.org/sdr/98ZZZX308), Nov 13, 1997: FLAME DETECTOR. FAILED. NR 1 ENGINE T-HANDLE FIRE LIGHT ILLUMINATED INTERMITTENTLY. REMOVED AND REPLACED NR 1 ENGINE FORWARD FLAME DETECTOR. - [SDR 97ZZZX4413](https://openairdocs.org/sdr/97ZZZX4413), Jul 22, 1997: WHEEL BLADES. ERODED. TURBINE ASSEMBLY RECEIVED DUE TO 2,000 HOUR OVERHAUL. FOUND FIRST STAGE WHEEL HAD BURNED AND ERODED BLADES CAUSED BY SULFIDATION. - [SDR 97ZZZX4431](https://openairdocs.org/sdr/97ZZZX4431), Jun 5, 1997: WHEEL BLADES. BROKEN. TURBINE ASSEMBLY WAS RECEIVED WITH ENGINE ASSEMBLY DUE TO MAKING METAL. UPON INSPECTION OF G.P. SECTION, FOUND SULFIDATION ON 1ST STAGE WHEEL. 1ST STAGE WHEEL: - [SDR 97ZZZX945](https://openairdocs.org/sdr/97ZZZX945), Sep 22, 1996: SKIN. CRACKED. DURING PHASE INSPECTION, FOUND CRACK IN PYLON SKIN ACROSS RIVET HOLE. THIS CRACK EMANATED FROM CORROSION OF THE SKIN. FURTHER INSPECTION REVEALED CORROSION ON V - [SDR 97ZZZX260](https://openairdocs.org/sdr/97ZZZX260), Sep 20, 1996: BLADE. DEBONDED. DURING DAILY INSPECTION, FOUND UPPER SURFACE SKIN DEBONDED APPROXIMATELY 20 INCHES BY 8.50 INCHES NEAR BLADE TIP. - [SDR 96ZZZX2217](https://openairdocs.org/sdr/96ZZZX2217), Mar 18, 1996: BLADE. CRACKED. DURING 500-HOUR INSPECTION, FOUND BLADE SPAR CRACKED AT ROOT END BUSHING HOLE. SUBMITTER STATED CAUSE UNKNOWN. - [SDR 96ZZZX2218](https://openairdocs.org/sdr/96ZZZX2218), Mar 7, 1996: BEARING. GALLED. UPON DISASSEMBLY OF GEARBOX, CLEANED AND INSPECTED PARTS AS REQUIRED. FOUND EXCESSIVE GALLING ON PTO AFT, BEARING INNER RACE. EXCESSIVE GALLING, BEARING INNER R - [SDR 96ZZZX1822](https://openairdocs.org/sdr/96ZZZX1822), Feb 26, 1996: DETECTOR. MALFUNCTION. DURING LEVEL FLIGHT, NR 1 ENGINE FIRE T-HANDLE ILLUMINATED. PERFORMED TIGHT TURN, LOOKING FOR INDICATION OF SMOKE. NOTED NO SMOKE, ALL ENGINE INDICATIONS WERE N - [SDR 96ZZZX737](https://openairdocs.org/sdr/96ZZZX737), Dec 27, 1995: WIRE. CHAFED. DURING FLIGHT, A ELECTRICAL SPARK WAS SEEN IN THE VICINITY OF THE OVERHEAD CIRCUIT BREAKER PANEL. REMOVED OVERHEAD ON PILOT'S SIDE AND FOUND A WIRE CHAFED AGAIN - [SDR 95ZZZX6780](https://openairdocs.org/sdr/95ZZZX6780), Dec 6, 1995: BLADE ASSY. DEBOND. TAIL ROTOR BLADE DISBOND DETECTED DURING DAILY INSPECTION. FOUND APPROXIMATELY 1 INCH BY 1 INCH SKIN DELAMINATION AT TIP WEIGHT AREA. POSSIBLY CAUSED BY RUST FO ## STCs that may be installed (OpenAirDocs) (352, first 50) Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do. ### Approved for the airframe (Sikorsky S-76A) - [STC SR04465NY](https://openairdocs.org/stc/SR04465NY): Installation of the iPad Mount. Avio Design Group Inc - [STC SR02727SE](https://openairdocs.org/stc/SR02727SE): Installation and maintenance of the Sunspot 36 and 46 series lights. Whelen Aerospace Technologies - [STC SR268CH](https://openairdocs.org/stc/SR268CH): Installation of BFG FlightSystems TCAS I (Model TCAS-791/A). Acron Aviation Inc - [STC SR00137DE-D](https://openairdocs.org/stc/SR00137DE-D): Installation of a Life Port "PLUS' System Installation; Serial Number 760288. Air Methods LLC - [STC SR00138DE-D](https://openairdocs.org/stc/SR00138DE-D): Installation of an Air Methods Emergency Medical Accessory Package; Serial Number 760288. Air Methods LLC - [STC SR00139DE-D](https://openairdocs.org/stc/SR00139DE-D): Installation of an Air Methods Avionics Upgrade Package; Serial Number 760288. Air Methods LLC - [STC SR01955SE](https://openairdocs.org/stc/SR01955SE): Installation of a Supplemental Lighting System. Aviation Specialties Unlimited Inc - [STC SR02473AK](https://openairdocs.org/stc/SR02473AK): Installation of the L-3 Communications NGT-9000R/RD and NGT-9000/D ADS-B IN/OUT system. StandardAero Atlantic USA Inc - [STC SR09011RC](https://openairdocs.org/stc/SR09011RC): Manufacture of an emergency exit window in passenger door. HELIFAB - [STC SR09211RC](https://openairdocs.org/stc/SR09211RC): Installation of an external mount life raft deployment system. HELIFAB - [STC SR09355RC](https://openairdocs.org/stc/SR09355RC): Installation of 12 place passenger seats. HELIFAB - [STC SR01367SE](https://openairdocs.org/stc/SR01367SE): Installation of Rockwell Collins Four Tube FDS 2000 Electronic Flight Instrument System (EFIS) and Rockwell Collins AHC 3000 Attitude Heading Reference System (AHRS). Helifab - [STC SH3319NM](https://openairdocs.org/stc/SH3319NM): Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,. Precise Flight Inc - [STC SR00112BO](https://openairdocs.org/stc/SR00112BO): Installation of either the OuterLink Corporation CP-2 or CP-3i SATCOM System in accordance with OuterLink Corporation Master Document List No. D000-0042, Revision N, dated August 19, 2009, or later FAA-approved revision. Outerlink Corporation - [STC SR01520SE](https://openairdocs.org/stc/SR01520SE): Installation of a Modularized Main DC Electrical Junction Box. Helifab - [STC SR04609NY](https://openairdocs.org/stc/SR04609NY): Installation of Garmin HTAWS (Helicopter Terrain Awareness Warning System). Maxcraft Avionics Ltd - [STC SR02322AK](https://openairdocs.org/stc/SR02322AK): Installation of a fixed mounted Max-Vis Enhanced Vision System (EVS) Model 1500. PECO Inc - [STC SR00925DE](https://openairdocs.org/stc/SR00925DE): Installation of Garmin GTX 335/335R and GTX345/345R transponders to provide ADS-B Out and In functionality. Peregrine - [STC SH2224NM](https://openairdocs.org/stc/SH2224NM): Installation of dual Sperry EDZ-705 Electronic Flight Instrument Systems, (EFIS). Honeywell International Inc - [STC SH2218NM](https://openairdocs.org/stc/SH2218NM): Installation of Sperry digital automatic flight control systems for one or two pilot IFR/VFR operation. Honeywell International Inc - [STC SR04440NY](https://openairdocs.org/stc/SR04440NY): Installation of the Mid Continent MD302 Standby Attitude Module. Maxcraft Avionics Ltd - [STC SR02667SE](https://openairdocs.org/stc/SR02667SE): Installation of a Honeywell ASPIRE 200 Intermediate Gain (IG) SATCOM system. Honeywell International - [STC SR00764DE](https://openairdocs.org/stc/SR00764DE): Installation of Automatic Dependent Surveillance - Broadcast (ADS-B) Out functionality using the Trig Avionics TT22 Transponder and Freeflight Systems 1201 Global Positioning System (GPS) with Wide Area Augmentation System (WAAS). Peregrine - [STC SH5778SW](https://openairdocs.org/stc/SH5778SW): Addition of Electrically Driven Vapor Cycle, Freon or Refrigerant R-134a, Air Conditioning System. Air Comm Corporation - [STC SR00162DE-D](https://openairdocs.org/stc/SR00162DE-D): Installation of a LifePort 'PLUS' system. LifePort LLC - [STC SR00391DE](https://openairdocs.org/stc/SR00391DE): Installation of TREC dual patient handling system. LifePort LLC - [STC SR02125LA](https://openairdocs.org/stc/SR02125LA): Installation of a One Man Loading Patient Litter System. LifePort LLC - [STC SR02611NY-D](https://openairdocs.org/stc/SR02611NY-D): Installation of the LifePort One Man Loading Patient Litter System. LifePort LLC - [STC SH8678SW](https://openairdocs.org/stc/SH8678SW): Installation of an electronic bay access door window. The NORDAM Group LLC - [STC SH8679SW](https://openairdocs.org/stc/SH8679SW): Installation of a chin window. The NORDAM Group LLC - [STC SR04023CH](https://openairdocs.org/stc/SR04023CH): Install air ambulance conversion. Spectrum Aeromed LLC dba Spectrum Aeromed - [STC SR03573NY](https://openairdocs.org/stc/SR03573NY): Installation of Garmin GTN/GNS() Navigation with EDZ-705 or EDZ-756 EFIS. Maxcraft Avionics Ltd - [STC SR04227NY](https://openairdocs.org/stc/SR04227NY): Installation of Garmin GWX Weather Radar System. Maxcraft Avionics Ltd - [STC SR00256BO](https://openairdocs.org/stc/SR00256BO): Installation of Universal Avionics Systems Corporation (UASC) Software Control Number (SCN) 31.X in UASC Cockpit Display Computer (UCDC) P/N 3040-05-( ). Pro Star Aviation, LLC - [STC SR00274BO](https://openairdocs.org/stc/SR00274BO): Installation of an L3 Communications GH-3100 Electronic Standby Instrument System (ESIS) and Optional Emergency Bus. Pro Star Aviation, LLC - [STC SR00275BO](https://openairdocs.org/stc/SR00275BO): Installation of tail shaft cover antenna mount. Pro Star Aviation, LLC - [STC SR00289BO](https://openairdocs.org/stc/SR00289BO): Installation ofa Kollsman General Aviation Vision System (GAViS ). Pro Star Aviation, LLC - [STC SR04022NY](https://openairdocs.org/stc/SR04022NY): AF-ADELT improved installation. Caledonian Airborne Systems Ltd Caledonian House - [STC SR01616SE](https://openairdocs.org/stc/SR01616SE): Installation of an engine air filter system. Aerometals - [STC SR00763DE](https://openairdocs.org/stc/SR00763DE): Installation of a 62 Gallon Auxiliary Fuel Tank in the baggage compartment. Helifab Inc - [STC SR09577RC](https://openairdocs.org/stc/SR09577RC): Installation of an Automatic Deployable Emergency Locator Transmitter (ADELT) System. Bristow US LLC - [STC SR03441CH](https://openairdocs.org/stc/SR03441CH): Installation of TrueView Enhanced Vision System (EVS) T6-Series. Mayday Avionics Inc - [STC SR09626RC](https://openairdocs.org/stc/SR09626RC): Installation of an aft cabin area Storage Net. Helifab Inc - [STC SR03498NY](https://openairdocs.org/stc/SR03498NY): Install IONode Flight Data Monitor. Maxcraft Avionics Ltd - [STC SH570NE](https://openairdocs.org/stc/SH570NE): Installation of door stops. Sikorsky Aircraft Corporation - [STC SH765NE](https://openairdocs.org/stc/SH765NE): Installation of an opening camera window. Sikorsky Aircraft Corporation - [STC SR00006NY](https://openairdocs.org/stc/SR00006NY): Installation of Medevac (EMS) interior. Sikorsky Aircraft Corporation - [STC SR00033NY](https://openairdocs.org/stc/SR00033NY): Installation of grease fittings. Sikorsky Aircraft Corporation - [STC SR00085NY](https://openairdocs.org/stc/SR00085NY): Installation of Bendix/King Model CAS 66A TCAS 1, System. Sikorsky Aircraft Corporation - [STC SR00285NY](https://openairdocs.org/stc/SR00285NY): Installation of Medevac (EMS) Interior. Sikorsky Aircraft Corporation All 352: https://openairdocs.org/aircraft/N768AL/stcs.md ## Related - Other Sikorsky S-76A aircraft: https://openairdocs.org/model/sikorsky-s-76a/aircraft.md --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.